1 files changed, 19 insertions, 5 deletions
diff --git a/packages/asset-buyer/src/constants.ts b/packages/asset-buyer/src/constants.ts
index 79b5d9052..e1056e39b 100644
--- a/packages/asset-buyer/src/constants.ts
+++ b/packages/asset-buyer/src/constants.ts
@@ -1,6 +1,15 @@
 import { BigNumber } from '@0xproject/utils';
 
-import { BuyQuoteRequestOpts } from './types';
+import { AssetBuyerOpts, BuyQuoteExecutionOpts, BuyQuoteRequestOpts } from './types';
+
+const NULL_ADDRESS = '0x0000000000000000000000000000000000000000';
+const MAINNET_NETWORK_ID = 1;
+
+const DEFAULT_ASSET_BUYER_OPTS: AssetBuyerOpts = {
+    networkId: MAINNET_NETWORK_ID,
+    orderRefreshIntervalMs: 10000, // 10 seconds
+    expiryBufferSeconds: 15,
+};
 
 const DEFAULT_BUY_QUOTE_REQUEST_OPTS: BuyQuoteRequestOpts = {
     feePercentage: 0,
@@ -8,13 +17,18 @@ const DEFAULT_BUY_QUOTE_REQUEST_OPTS: BuyQuoteRequestOpts = {
     slippagePercentage: 0.2, // 20% slippage protection
 };
 
+// Other default values are dynamically determined
+const DEFAULT_BUY_QUOTE_EXECUTION_OPTS: BuyQuoteExecutionOpts = {
+    feeRecipient: NULL_ADDRESS,
+};
+
 export const constants = {
     ZERO_AMOUNT: new BigNumber(0),
-    NULL_ADDRESS: '0x0000000000000000000000000000000000000000',
-    MAINNET_NETWORK_ID: 1,
-    DEFAULT_ORDER_REFRESH_INTERVAL_MS: 10000, // 10 seconds
+    NULL_ADDRESS,
+    MAINNET_NETWORK_ID,
     ETHER_TOKEN_DECIMALS: 18,
+    DEFAULT_ASSET_BUYER_OPTS,
+    DEFAULT_BUY_QUOTE_EXECUTION_OPTS,
     DEFAULT_BUY_QUOTE_REQUEST_OPTS,
     MAX_PER_PAGE: 10000,
-    DEFAULT_EXPIRY_BUFFER_SECONDS: 15,
 };